w 1044 Appendix VI. slide D is moved rightward and leftward on the bed E by the roller H from the action of the cam drum. On the bottom end of stud c is a star wheel F, and when the slide D moves to the right the star F catches the finger or pawl G, causing the turret to rotate one-fifth of a revolution, the finger springing out of gear on FjjUs-gjuJLom/xJbui, Tuurrdb SJjtiLe/. F^q. 942. the return stroke. The back travel is limited by the boss j, which strikes the part K of the bed casting. The angular position of the turret is decided and retained by the spring stop L, which engages with a plate on the base of the turret, and the stop is released just before rotation of turret by the square stud M mounting a cam slide N into the position p. The wedges Q and B, are adjusted so as to give steadiness without undue grip.